At present, the serial disc chippers adopt wear-resisting backing board plate coated with chromium.The flying knife, bottom knife and flying knife bolt adopt the special steel and are made specially.是什么意思_At present, the serial disc chippers adopt wear-resisting backing board plate coated with chromium.The flying knife, bottom knife and flying knife bolt adopt the special steel and are made specially.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句